In the 1950s, rival electronics companies aim to make music portable for the first time ever. What follows is a decades-long rivalry that prompts the creation of iconic products like the Pocket Radio, Cassette Tape, Walkman and the CD, alongside the rise of two of the biggest companies in the world.

A down-on-his-luck car salesman has the visionary idea to start the first rental car company in America, and when he joins forces with cab company owner John Hertz, they spread their revolutionary business across the country. But when WWII veteran Warren Avis starts his own rental car company, fierce competition between the two gives rise to a new industry with a $100 billion annual market.